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Products Name: 3.3kw High Efficiency Intelligent Charger
products Gallery: BATTERY CHARGERS





I Product Overview

3.3kw high efficiency intelligent charger is designed to charge power batteries of electric vehicles. This series of products adopt the most advanced technologies such as LLC resonant, active power factor correction, microcomputer measurement and control, digital adjusting, fully sealed waterproof technology and so on. Its features include: wide input voltage range adapted to global general voltage; High input power factor that significantly reduces the input current as well as heat generated by input cables, so the charger can be safely used in family; Low harmonic current that reduces interference to other electric equipment. Full range soft switching is realized to achieve high conversion efficiency and slight electromagnetic interference, the charger is more energy-saving and money-saving to use; the charger is designed according to IP66 protection grade and achieved high waterproof performance. Another feature includes small size, light weight, quiet operation, beautiful appearance, simple installation, operation and maintenance and so on.

The charger adopts microcomputer measurement and control technology, embedded CPU can accurately detect various states of battery. Advanced multi-stage charging mode can prevent the battery from be over-charged and over-discharged, minimize overheating and water loss phenomenon caused by over-charge, slow down polar plate vulcanization phenomenon caused by over-discharge, extend the service life of batteries. The charger will stop automatically after fully charged.

The charger has functions of temperature compensation, automatically shut down after fully charged, battery reverse connection protection, output short circuit protection, AC input under-voltage protection, overheating protection and so on, and these functions can ensure safe and reliable use.

II Safety Instructions

Please read these instructions carefully before you use the charger

(1) For safety consideration, the charger adopts AC single-phase three-wire inputs which contain live, neutral and protective grounding wire. The shell of charger connects protective grounding wire. When using the charger, you should connect it to power grid with a quantified 16A three-hole socket which contains a grounding pole and controlled by a leakage protection air breaker with leakage protection function to prevent leakage and fire.

(2) Please use dedicated 16A plug and socket of reliable quality for the charger (Socket requirements: flame-retardant shell and cables of the socket, thick internal springs that not less than 0.8mm and has a good elasticity), or it may burn the plug and socket, even cause severe fire! Copper core cables thicker than GB 2.5mm2 are suggested to be used as power connections to prevent the cables from becoming too hot when charging ,so to prevent fires.

(3) Please do not disassemble the charger; this may cause electric shock or other injuries.

(4) If the charger need to be connected to AC power supply with extension cables, please make sure that the extension cable can withstand the maximum input current(GB 2.5mm2 copper core cable is recommended to be used), and limit the extension cable length within 10m.

(5) Don’t place the charger in water or rain position; otherwise there is a danger that may cause electric shock and damage to the charger.

(6) The charger’s DC output plug should be connected reliably to the socket, if they are damaged or loose, please replace them immediately, otherwise it will cause overheating in the plug position, and even cause serious fire.

(7) If the charger product any abnormal sound or smell during working, please unplug the power plug immediately and contact the service department. Do not attempt to open the shell of charger, to prevent electric shock.

(8) Make sure that all air vents are unobstructed to prevent charger overheating. Do not place the charger near a heat source; the charger should be left enough space to ensure ventilation and use of connectors.

(9) Please disconnecting the charger's AC input power if you need to move it.

(10) Make sure that AC power supply voltage matches chargers’ input voltage. For inquiries, please contact your supplier or local power Supply Corporation.

(11) Battery voltage and the nominal voltage of the charger must be matched; otherwise it will damage the charger or batteries.

(12) Do not pull, twist or shake the cables to avoid damage to the charger’s cables and connection terminals. If the cable is worn, please replace it immediately.

III Preventing Leakage and Fire

1. Correct use of Breakers, Sockets and Cables

(1) Its required to use a leakage protection air breaker with leakage protection function.

(2) Its required to use reliable qualified 16A three-hole socket to connect the charger to AC power.

(3) Input cables of leakage protection air breaker is required to use copper core cables with flame-retardant jacket, the cables’ core diameter is not less than 2.5mm2.

(4) The cables between leakage protection air breaker and 16A socket are required to use copper core cables with flame-retardant sheath, the cables’ core diameter is not less than 2.5mm2.

(5) Prevent plugs, sockets from dripping or splashing.

Note: According to statistics, 80% fire accident caused by an electric car occurred during charging, main reasons for this are insufficient core diameter size of cables, poor quality plugs and sockets, poor contact of plugs and sockets, poor flame-retardant sheath or shells of breakers, plugs and sockets and so on.

2. Correct Use of Input Connections









(1) It’s required to use a dedicated 16A power plug for the charger;

(2) It’s required to use copper core cables with flame-retardant sheath; the cables’ core diameter is not less than 2.5mm2.

(3) Make sure that the plug is clean (no dirty) and no damage before charging.

3.Charging Environment Requirements

(1) Spacious and airy;

(2) No flammable materials; prohibited charging in warehouse.

(3) Keep away from valuables such as automobiles.

(4) Keep away from bedroom when charging at night.

(5)Prohibit placing the charging plugs, charging cables or charger itself on car cabs, plastics chairs and other inflammable objects.

IV Regularly Maintenance

(1) Check 16A sockets regularly, if the connection between the socket and the plug is loose or poor contacting, they should be firmly connected or replaced before the charger be used. The poor contact may result in overheating and burning of the plug and socket, and even cause a fire.

(2) Check the leakage protection air breaker regularly using the test button to ensure its protection function is valid.

(3) Make sure to use a dedicated input cable and plug for the charger.

(4) Make sure that there are no foreign matters between the charger’s shell and the cooling fan to avoid damage to the fan.

(5) Make sure that the appearance of battery is not ballooning; the battery is not overheating when charging.

IV Product Models

Available Product Models

        48V35A, 72V30A,96V25A,144V20A,312V10A


V Technical Specifications

Rated input voltage:          220Vac 50/60Hz

Input voltage range:         85~265Vac (Note: When the Input voltage is lower than 185Vac, the output power will be limited to 1.5KW)

Input Current:               ≤ 16A (Note: except models of “CH4100-9625”)

Power Factor:               ≥ 0.99 @ 220Vac input, full power output;

Total Harmonic Current:       ≤ 5% @ 220Vac input, full power output;

Nominal output voltage (Un):   See Model Description

Maxim output voltage:         140%Un

Rated output current (Ir):       See Model Description

Voltage regulation accuracy:    ≤ 0.5%

Current regulation accuracy:    ≤ 2%

Conversion efficiency:         ≥ 95% @ 220Vac input, full power output

Protection class:              IP66

Audible Noise:               ≤ 40dB

Seismic rating:               Designed according to IEC60335-2-29-2004-Part.21

Working temperature:        -25~55℃ (Note: models whose output power greater than 2KW will ensure 2KW output at 60℃. )

Storage temperature:          - 40~80℃                         

Recognition certificates:       CE SGS

VI parts list




A   AC input Cables    B   DC output cables  C   Signal Cables

D   Charging indicator   E   Mounting plate   F   Shell

G   Cooling fan and fan cover

VII Input and output interface


Input Cables

Terminal Model



Direction of view: form the cables to terminal.

Terminal Model for matching



Needle No.

Wire Color

Wire core diameter




2.5 mm2

L——Live wire



2.5 mm2

N——Neutral wire


Yellow and green

2.5 mm2

PE——Protective grounding wire

Output Cables

Terminal Model


Needle No.

Wire Color

Wire core diameter




6 mm2

Output positive pole



6 mm2

Output negative pole

Signal Cables

Needle No.

Wire Color

Wire core diameter


Needle No.









external LED indicator interface










Battery Temperature sensor interface







Serial communication




Yellow and  green


Blue and white


Green and white




Forbidden signal interface
(normal close)




Wire core diameter

0.5 mm2 for all Signal wires

Signal Cables Terminal Diagram

Direction of view: form the cables to terminal.






VIII Charging Indicator Information Description

The charger installed a LED indicator internally, this built-in indicator display information through the window on the shell of charger. Besides the charger provides an external LED indicator interface that can connect the optional external LED indicator. Internal and external LED indicator can light synchronously with "red, green, yellow" three colors; the LED indicator can express a variety of working conditions of the charger with different color combinations. The following table is a description of indicator information.


LED Indicator Information Description

I. Charging Process Information


Low battery power



Battery charge lower than 80%



Battery charge between 80%--90%



Battery charge between 90%--100%



Full charge

Normal process of charging

continuous Green light

Battery temperature sensor fault

Green light (3S) Yellow light (0.3s)

II. Alarm Information


Battery Not connected



Charger over-temperature protection



Input fault protection



Charging timeout



Battery Overheating



Pre-Charge timeout



Internal temperature sensor fault



Output voltage feedback fault

R-G-Y-Y-Y-Y-Y-Y -Y---


Low temperature start delay

(When the internal temperature of charger is between -20 to -30 ° C, the charger will delay starting for 1~2 minutes)

R-G-Y-Y -Y-Y-Y-Y-Y-Y---


1."-" represents led that does not light for 0.5s, a color word represents that the LED of this color lights for 0.2s.

2. R --red   G —green  Y—yellow


IX Methods of Operation

(1) Connect the output terminal of the charger to the battery terminal

(2) Connect the input plug of the charger to AC power socket until the charger turns into normal charging process (observe the LED Indicator), then Charger will automatically charge the batteries. When fully charged, the charger will automatically shut down, and display ‘full power’.

(3) If observed the battery become overheating or ballooning during charging process, you should stop the charger immediately by unplug the plug from the AC socket.




X Appearance and Installation Dimensions









XI Faults & solutions

If your charger can not work correctly, you can refer to table below


Fault Phenomenon



Battery temperature

Sensor Fault

External battery temperature sensor is fault or not connected

Check sensor connection or change a new one

Battery not connected

Battery is not connected or reverse connected

Check and connect the battery correctly



Charging environment temperature is too high; cooling fan is fault;

air vents are obstructed

Place the charger in lower temperature environments and recharge;

Check whether cooling fan is fault or air vents are obstructed  

Input fault protection

Poor contact of charger’s input side ; Charger is broken

If no poor contact phenomenon occurs, please contact us

Charging timeout

Battery is damaged or aging

Check and replace battery

Battery Overheating

Battery is damaged or aging

Check and replace battery

Pre-charge timeout

Battery is damaged or aging

Check and replace battery

Internal temperature

sensor fault

Charger is broken inside

Please contact us

Output voltage

feedback fault

Charger is broken inside

Please contact us

“Full Power ”after

short charging

Battery is broken;

Poor contact between charger and battery;

Battery has been fully charged;

Check whether the battery is damaged; battery connecting cables are firm ; the battery is fully charged

Battery temperature becomes more than 50℃ and produces a lot of bubbles

Battery is aging ;

Battery voltage is lower than the nominal voltage of the charger

Check the battery, and replace bad battery; Reselect charger that match battery voltage level .

Low battery capacity after fully charging

Battery is aging

Replace the battery

Cables are too long or too thin Between the charger and battery

resume The output cables back to initial state

Charging time becomes too short or too long

Battery is aging

Replace the battery

Charger overheating protection

Check if there are foreign matters around the fan and remove them

Check whether the cooling fan is working correctly, or contact us to replace the fan.

LED indicator lights but no charging

Connectors are not connected firmly, or the polarity is reversed; Battery is disconnected

Connect all connectors correctly and recharge

Battery is broken

Replace  new battery

LED indicator doesn’t light

AC input is not connected firmly

Check AC power supply and chargers’ input cables

Charger is broken inside

Please contact us

If your charger still cannot work correctly after above treatment, please record the state of the fault phenomenon and charging indicator information, then contact us.


Contact: David Yu                                      Email: 13924639378@139.com          Mobile: (+86)13924639378                    Whatsapp: +86 139 246 39378             Tel:(+86)755-26959270                       Fax:(+86)4006981163-23090

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